I saw it last night, I had a good time and quite liked it. Not the best film ever made, probably the best one in the film series thus far though which is encouraging, really fun and does a good job of taking what it needs from the book and cutting/circumventing the miscellaneous, although I agree that it did get a bit jumpy at times. The photography was really nice, some real effort made this time around, although I didn't like the new-look Dementors at all. Nitpicking.
I've read and really enjoyed all of the books, and watched it with some other 'book fans' so for me what was most interesting was the chatting about it afterwards, and the (fairly well-substantiated, it turns out from research) theory that Rowling has been hinting/seeding to the directors and screenwriters just what important stuff should be left in ahead of Book Seven's release. Wikipedia notes that Kreacher the house-elf wasn't in one draft of the script, but was reinstated after some gentle prodding from JK, for instance. So, we had a good time discussing what was left in and taken out, and whether or not that can give any hints as to what will come to the fore in Book Seven.
I also liked some of the subtle touches in the movie - Ginny Weasley's jealous looks to Cho Chang, Voldemort instantly being badass by holding his wand in the most impractical/devil-may-care fashion possible, and the animations of the magic duels to name just three.
Also, Rupert Grint is turning into a pretty good comic actor, and it's almost acceptable to sort of fancy Emma Watson right now. Plus, the Lovegood bandwagon is right on the money, she was awesome.